cout < "\nthe="" area="" of="" the="" square="" is:="" "="">
break;
case 23:
cout<"\nenter the="" number="" :="">"\nenter>
cin>>x;
cout<"\nln =="">"\nln><><>
break;
case 24:
cout<"\nenter the="" number="" :="">"\nenter>
cin>>x;
cout<"\nlog =="">"\nlog><><>
break;
case 25:
float a, b, c, d, a2, b2, c2, d2;
cout< "\ninsert="" the="" values="" of="" a,="" b,="" c,="" and="" d="" in="" the="" equation="" ax^2="" +="" bx="" +="" c="d""><>
cout<>
cin>> a;
cout<>
cin>> b;
cout<>
cin>> c;
cout<>
cin>> d;
cout< "\ninsert="" the="" values="" of="" a2,="" b2,="" c2,="" and="" d2="" in="" the="" second="" equation="" ax^2="" +="" bx="" +="" c="d""><>
cout<>
cin>> a2;
cout<>
cin>> b2;
cout<>
cin>> c2;
cout<>
cin>> d2;
cout< "\nthe="" value="" between="" the="" difference="" of="" the="" two="" equations="">
cout< "\n("="">< a-a2="">< ")x^2="" +="" ("="">< b-b2="">< ")x="" +="" ("="">< c-c2="">< ")="(""> >< d-d2=""><><>
break;
default:
cout<><>
}
}
cout < "do="" you="" want="" to="" continue="">
cout < "you="" must="" type="" a="" 'y'="" or="" an="" 'n'="">
cin >> ans;
}
while ((ans == 'Y') || (ans == 'y'));
}